What says FX? “A mole hunt within the KGB causes suspicion amongst allies and shatters trust within the Jennings’ marriage. Meanwhile, Stan’s plan to keep his mole safe puts her at even greater risk of discovery.”

How does it start? With a great teaser. “How does this happen?” Elizabeth asks Philip.

The big news? The Jennings kids and Martha (the FBI clerk “Clark” has been regularly debriefing) have something in common this week.